Elsevier Backend Developer interview questions

Interviewers were nice and asked pinpointed questions about oop concepts, java, and etc. There was also whiteboard coding session. It also covered necessary aspects. Recruitment process is taking quite a lot of time. It took almost 21 days to let me know that they cannot offer because of budget after verbal offer. That part is ok, but the time of candidate should be respected. No returns to mail or call during the process... It will keep happening when there will be no consequences.